"In 1995, On The Park’s 40th Anniversary, Cast Members Buried A Time Capsule (Called The “Time Castle”, So That Future Visitors Could Take A Peek Into The Past"
"The Time Castle, buried right in the center court off Main Street, contains photos, newspapers, an Indiana Jones decoder card, and more memorabilia. The capsule lies in wait for its reopening, slated for the park’s 80th anniversary in 2035"